fix bug #175

Author: abuzuhri

Source/FikaAmazonAPI/AmazonSpApiSDK/Models/FulfillmentInbound/GetLabelsResponse.cs

@@ -34,6 +34,11 @@ public partial class GetLabelsResponse : IEquatable<GetLabelsResponse>, IValidat
             this.Errors = Errors;
         }
 
+        public GetLabelsResponse()
+        {
+            this.Payload = default(LabelDownloadURL);
+            this.Errors = default(ErrorList);
+        }
         /// <summary>
         /// The payload for the getLabels operation.
         /// </summary>

Source/FikaAmazonAPI/Services/FulFillmentInboundService.cs

@@ -187,15 +187,15 @@ public async Task<CommonTransportResult> ConfirmTransportAsync(string shipmentId
             return null;
         }
 
-        public GetPrepInstructionsResult GetLabels(ParameterGetLabels parameterGetLabels) =>
+        public LabelDownloadURL GetLabels(ParameterGetLabels parameterGetLabels) =>
             Task.Run(() => GetLabelsAsync(parameterGetLabels)).ConfigureAwait(false).GetAwaiter().GetResult();
 
-        public async Task<GetPrepInstructionsResult> GetLabelsAsync(ParameterGetLabels parameterGetLabels)
+        public async Task<LabelDownloadURL> GetLabelsAsync(ParameterGetLabels parameterGetLabels)
         {
             var parameter = parameterGetLabels.getParameters();
             await CreateAuthorizedRequestAsync(FulFillmentInboundApiUrls.GetLabels(parameterGetLabels.shipmentId), RestSharp.Method.GET, parameter);
 
-            var response = await ExecuteRequestAsync<GetPrepInstructionsResponse>(RateLimitType.FulFillmentInbound_GetLabels);
+            var response = await ExecuteRequestAsync<GetLabelsResponse>(RateLimitType.FulFillmentInbound_GetLabels);
             if (response != null && response.Payload != null)
                 return response.Payload;
             return null;